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首页> 外文期刊>Journal of Biomechanics >An upper extremity kinematic model for evaluation of hemiparetic stroke.
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An upper extremity kinematic model for evaluation of hemiparetic stroke.

机译：上肢运动学模型用于评估偏瘫性中风。

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摘要

Quantification of rehabilitation progress is necessary for accurately assessing clinical treatments. A three-dimension (3D) upper extremity (UE) kinematic model was developed to obtain joint angles of the trunk, shoulder and elbow using a Vicon motion analysis system. Strict evaluation confirmed the system's accuracy and precision. As an example of application, the model was used to evaluate the upper extremity movement of eight hemiparetic stroke patients with spasticity, while completing a set of reaching tasks. Main outcome measures include kinematic variables of movement time, range of motion, peak angular velocity, and percentage of reach where peak velocity occurs. The model computed motion patterns in the affected and unaffected arms. The unaffected arm showed a larger range of motion and higher angular velocity than the affected arm. Frequency analysis (power spectrum) demonstrated lower frequency content for elbow angle and angular velocity in the affected limb when compared to the unaffected limb. The model can accurately quantify UE arm motion, which may aid in the assessment and planning of stroke rehabilitation, and help to shorten recovery time.
机译：康复进度的量化对于准确评估临床治疗是必要的。使用Vicon运动分析系统，开发了三维（3D）上肢（UE）运动模型，以获取躯干，肩膀和肘部的关节角度。严格的评估确认了该系统的准确性和精确性。作为应用示例，该模型用于评估八名具有痉挛性的中风偏瘫患者的上肢运动，同时完成一组伸手的任务。主要结果指标包括运动时间，运动范围，峰值角速度和达到峰值速度的到达百分比的运动学变量。该模型计算了受影响和未受影响的手臂中的运动模式。未受影响的手臂比受影响的手臂表现出更大的运动范围和更高的角速度。频率分析（功率谱）显示，与未患肢相比，患肢的肘角度和角速度的频率含量较低。该模型可以准确地量化UE手臂的运动，这可能有助于中风康复的评估和计划，并有助于缩短恢复时间。

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